Thank you for the clarification Josh. Originally I used Candusso & Lanzoni where they’re treated as different, but then Else synonymyzies them in FAN and even Index Fungorum indicates that. L. erminea sounds more sophisticated too…

If in grass then it most likely is Lepiota alba — very, very common and gregarious in Europe. Edible too. But, if not in grass, then I’d keep the material, take it back and give it some proper attention. Does that seem like moss on your photo?